RE: just bought a used t-maxx .15, some help plz
You will probally have problems with the front driveshafts. If you are gonna upgrade the arms to Rpm. Get the arms for the 2.5/3.3 They will be wider and will also require new driveshafts. The 2.5/3.3 drive shafts are a little larger and will handle the extra power alot better.